Weather-strip.



C. A. BLOHM & C. H. GHAMBERLIN.

WEATHER STRIP.

APPLICATION FILED PEB.15, 1909.

Patented Sept. 21, 1909.

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T'TOANEYS.

groove in its side and bottom members 8 and 'pecially to that class ofdevices in which a 'casing respectively, in such a manner thathorizontal sectional view drawn on line w-m stantially as shown. 3 nails7 are passed through the laterally exents-ran snares earner ci ric-a.

CHARLES A. BLOHM AND CLARENCE H. CHAMBERLIN, 0F MILWAUKEE, WISCONSIN,ASSIGNORS T0 FEDERAL METAL WEATHER STRIP COMPANY, OF MILWAUKEE,

WISCONSIN, A CORPORATION OF WISCONSIN.

WEATHER-STRIP.

seamen.

To all whom it may concern:

Be it known that we, CHARLES A. BLoH'M and CLARENCE H. OHAMBERLIN,citizens of the United States, residin at Milwaukee, county ofMilwaukee, and gtate of VVisconsin, have invented new and usefulImprovements in YVeather-Strips, of which the following is aspecification.

Our invention relates to improvements in weather strips for windows, andpertains esgrooved window sash is provided with one or more metallicmembers adapted to interact with and slidingl-y engage counterpartmembers on the window frame or casing.

The object of this invention is to overcome the dificulty heretoforeexperienced insecuring such strips to the window sash and they will notcatch or bind upon each other, nor upon the securing devices, the latterserving, in our improved construction, to reduce the friction of thewindow sash when moved alon the window frame.

In the fo lowing description, reference is had to the accompanyingdrawings, in which, i

Figure 1 is a frontwiew of the lower portion of a window frame and-sashwith our invention applied thereto. Fig. 2 is a detail of Fig. 1. Fig. 3is an edge view of a portionof one of the side rails of asash.

Like parts are identified by the same reference characters throughoutthe several views.

The casing 1 of the window, at the sides and along the sill 2 isprovided with a metallic member, which, in the constructionillustrated,-in Fig. 2, comprises a strip-of comparatively thinmet-alfolded along longitudinal lines to form a set of ribs 3 and'& andlaterally projecting base members 5 and 6, which extend in the samedirection from the ribs and are lapped upon each other sub- Securingscrews or tending margins of the strip into the window casing, the headsofthese screws being preferably countersunk in the outer member 6 andhaving fiat outer surfaces.

Each window sash is provided with a 9 respectively, and this groove islined with p I specification of Letters Patent. Patented $31M].21,1,9QQ. Application filed February 15, 1999. Serial No. 477,858.

a metallic member comprising a strip of metal bent or folded alonglongitudinal lines to form walls 10 and 11 for the sides of the grooveand a base wall 12 having'an outwardly projecting rib 13 whichsubdivides the groove into two channels adapted to loosely receive theribs 3 and 4 respectively. One margin of this strip constitutes theouter edge of the side wall 11. The strip along the outer margin 14 isextended laterally to the edge of the-sash and secured to the sash atthe ends of the groove, preferably by round headed nails or screws 15,the

heads of which form bearings adapted to travel along the outer surfaceof the member 6. This construction not only avoids the necessity ofapplying nails or screws in the narrow spaces between the ribs, but thelaterally projectin members-form smooth metallic opposing caringsurfaces which will not permit the sash to bind especially where theround headed screws or nails are em: ployed to serve as spacin andantifriction devices. It is not materia to our. invention whether thelateral extensions are out-ward or inward extensions, that is, whetherthey project toward the exterior or interior of the building.

- In Fig. 3 it will be observed that where a sash cord groove 17 isemployed, the packing strip groove connects with it along one side thetwo grooves, constituting a single wide groove of sufficient width toreceivle the packing strip and the sash cord 18.

Having thus 7 described our invention,

what we claim as new and desire to secure by Letters Patent is,' I.

1. The combination with a window casing, and a sashhaving a groove inits side and bottom margins, of a strip of metal folded longitudinally.to form overlapping portions in the plane of the window casing andsecured thereto, said strip having its folded margin bent outwardly toform a projecting rib .en aging in the sash ,groove, and said stripaving one of its sides additonally folded outwardly to form a second ribsubstantially parallel to,the first mentioned rib, and between it andthe overlapped edge margins, together with another strip of metalforminga lining forthe sash groove and folded to providerib receiving channels,substantially as described.

2. The combination with a window casing and a sash having a groove inits side and bottom margins, of a folded strip of metal having its edgemargins substantially coincident with each other and'having twooutwardly extending. folds forming ribs, one of which is located at theside of the strip opposite the ed e margin and the other of which isparalle thereto and occupies an intermediate position between the firstmentioned strip and said edge margins, flat headed screws countersunk inthe overlapping'portions of said strip and securing said portions of thestrip to the window casing between the ribs and the edge margins,together with another strip ofmetal forming a lining or-the sash grooveand folded to provide rib receiving channels, said strip havin a sin 1elaterally extendin flange on the si e of 516 groove opposing the securedmargins of the strip connected with the casing, said flaii'e beingsecured to the sash by round head screws projecting from the surface ofthe flange and forming bearin CHARLES A. BLOHM. CLARENCE H. CHAMBERLIN.

Witnesses:

LEVERETT C. WHEELER," 0. R; EBWI'N.

